L2 or L3 ping routing

RouterOS General
1

I have RB600 with 3 ethernet in bridge mode. Eth 1 is uplink. I need to make this:

Eth 2 is high speed wirelles link with high latency more tha 70 ms.I need use ethernet 3 just for icmp packets for reduce Pings through this line. Is it possible? I dont know how to make it :frowning: does somebody help me? ROS v 3.0

2

What do you want to 1) improve pings from the router, or 2) clients ping to the router/otheraddress ?

  1. to route different traffic over different gateway policy routing is used.

  2. set priority=1 for pings going over clients network to get better results for ping.

3

I need transparent link. without routing.
I need reduce ping the wimax radio.. is is around 70 ms. I want to connect simple 5GHz radio link to ethernet 3 just for icmp packets. Is it possible? Wimax radiu is connected to eth 2 .

4

I want to connect simple 5GHz radio link to ethernet 3 just for icmp packets.

I do not clearly understood your description, but you will need routing if you want to send out ICMP over Ether3 not over Ether2.

So, probably it is easier to assign DSCP to ICMP packets and set priority=1 for ICMP traffic on all network routers and priority=8 for other ?

5

What value that i must enter to DSCP ?
If I look on version 2.9.x, min-delay is 16, so I must put 16 too in v3.x ?

6

It is better to use v3 for correct DSCP values.
v3 provides full support for DSCP values.

Note, in fact min-delay does not mean, that traffic will go trough the routers with minimal delay.
It is just additional setting for more advanced QoS. Only mangle rule with DSCP=1 (that could be abbreviated as min-delay) will not make any influence to your QoS. But you will get advantage, when you will use queues based on DSCP packet-marks.